If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated____________?

A. on its inner spindle with a relative motion between the vernier and the graduated scale of lower plate

B. on its outer spindle with a relative motion between the vernier and graduated scale of lower plate

C. on its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate

D. on its inner spindle without a relative motion between the vernier and the graduated scale of lower plate

Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.

Discuss the answer or suggest a sourced correction
Thank you for contributing.
Your comment was submitted and will appear after editorial review.

Your email is used only for moderation and is never displayed. Spam, copied material and fabricated endorsements are rejected.